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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <ui/FrameStats.h>
namespace android {
bool FrameStats::isFixedSize() const {
return false;
}
size_t FrameStats::getFlattenedSize() const {
const size_t timestampSize = sizeof(nsecs_t);
size_t size = timestampSize;
size += 3 * desiredPresentTimesNano.size() * timestampSize;
return size;
}
status_t FrameStats::flatten(void* buffer, size_t size) const {
if (size < getFlattenedSize()) {
return NO_MEMORY;
}
nsecs_t* timestamps = reinterpret_cast<nsecs_t*>(buffer);
const size_t timestampSize = sizeof(nsecs_t);
size_t frameCount = desiredPresentTimesNano.size();
memcpy(timestamps, &refreshPeriodNano, timestampSize);
timestamps += 1;
memcpy(timestamps, desiredPresentTimesNano.array(), frameCount * timestampSize);
timestamps += frameCount;
memcpy(timestamps, actualPresentTimesNano.array(), frameCount * timestampSize);
timestamps += frameCount;
memcpy(timestamps, frameReadyTimesNano.array(), frameCount * timestampSize);
return NO_ERROR;
}
status_t FrameStats::unflatten(void const* buffer, size_t size) {
const size_t timestampSize = sizeof(nsecs_t);
if (size < timestampSize) {
return NO_MEMORY;
}
nsecs_t const* timestamps = reinterpret_cast<nsecs_t const*>(buffer);
size_t frameCount = (size - timestampSize) / (3 * timestampSize);
memcpy(&refreshPeriodNano, timestamps, timestampSize);
timestamps += 1;
desiredPresentTimesNano.resize(frameCount);
memcpy(desiredPresentTimesNano.editArray(), timestamps, frameCount * timestampSize);
timestamps += frameCount;
actualPresentTimesNano.resize(frameCount);
memcpy(actualPresentTimesNano.editArray(), timestamps, frameCount * timestampSize);
timestamps += frameCount;
frameReadyTimesNano.resize(frameCount);
memcpy(frameReadyTimesNano.editArray(), timestamps, frameCount * timestampSize);
return NO_ERROR;
}
} // namespace android
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